NSC 3361 Lecture Notes - Lecture 1: Fruit Preserves, Cerebellum, White Matter
17 Jan 2017
School
Department
Course
Professor
Document Summary
Unipolar- a single extension that branches in two directions forming a receptive pole and an output zone. Bipolar- one axon, one dendrite- usually sensory neurons. Input zone: where neurons collect and integrate information. Information can be from environment or other cells. Integration zone: where the decision to produce neural signal is made. Conduction zone: where information can be transmitted over great distances. Output zone: where the neuron transfers information to other cells. Glia- the little people the stars sometimes remember to thank. Interneurons: receive input from and send input to other neurons-- integration. Symptoms: incoordination, tendency to fall in one direction, headaches. Symptoms: in baby boy, continual screaming, vomiting, enlarging head. Cause: astrocytes fill up with gfap, then fail. Wraps axons with myelin sheaths inside brain and spinal cord. Forms nodes of ranvier, where axon membrane is exposed from the myelin sheath. Microglia: phagocytes that clean up debris from dying neurons and glia.
